Nut-lock.



PATENTED JAN. 1, 1907. w. 1). LEONARD.

' NUT LOCK.

No. 840J43.

TION FILED APR. 27,1906.

2 zmiw UNITED STATES PATENT orrron.

WILLIAM DIETZ LEONARD,

OF YORK, PENNSYLVANIA.

NUT-LOCK.

Specification of Lett ers Patent. ew... filed April 27. 1906. sci-m1 1%.313.9%.

Patented J an. 1, 1907.

To all whom it may concern: 1 Be it known that I, WILLIAM DIETZ LEON-ARD, a citizen of the United States, residing I at York, in the countyof York. and'State of Pennsylvania, have invented certain new and usefulImprovements inNut-Locks, of which i the following is a specification.

This invention relates to new and useful improvements in nut-locks, 'andparticularly pertains to a type in which means are carried by the nutfor engaging the threads of the bolt toefiect an interlocked relationthere- I locking element. 3

the nut. Fig. 4 is a top plan view looking the course of the followingdescription, refer ence being had to the accompanying drawings, forminga part of .this specification, like numerals designating like partsthroughout the several views, wherein- Figure 1 is a front elevation,partly in section, showing'the arrangement of the'nuti Fig. 2 is asimilar view showing said element in its engaged position. Fig. .3 isafragmentary longitudinal section of toward one of the fiat faces of thenut, and Fi 5 is a view illustrating in top plan and f si e elevationthe nut-locking'element.

-In the practical embodimentof my invention the nut l is of conventionalform and is threaded upon a bolt 2. One of the side faces .of said nutis provided with an elongated recess 3, which communicates at a pointcentral thereof with a threaded open- Ing following a radial linethrough to the in ner circumference of the nut 1. This threaded openingis designated by the numeral 4 and is for the reception of a nut-lockingelement, which comprises a threaded pin 5, formed with a pointed end 6,designed to bite the threads of the bolt. The pin 5 is formed |-with asquared head 7 to facilitate its introduction into the opening 4, and onopposite sides of said'head 7 are alined extensions 8, which, togetherwith said head 7, occupy the longitudinal space of the recess 3, as isshown in Fig. 1.

When the pin 5 has been screwed into the opening 4 to the limit of itsmovementthat is, until the pointed end 6 thereof bites into the threadsof the bolt-the pin is locked in such position by bending the extensions8 by hammering or with a suitable tool into the position shown in Fig.2, wherein said extensions lie wholly within the space between the wallsof the recess 3.

claim- In a nut-lock, the combination of a flatsided nut formed with aradial threaded opening and alined recesses in its-flat side adjacent toand on each side of said opening and communicating therewith, of alocking element for positive engagement with the bolt comprising athreaded pin having a pointed Having fully described my invention, I

end projected through said opening and engaging said bolt, saidpin beingformed with I a squared head and with integral alined projections onopposite sidesof-said head designed to be bent downwardly into saidrecesses for positive engagement therewith.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM'DIETZ LEONARD. Witnesses:

J. EDW. 'RAMER,

